Other bacteria that can cause them include staphylococcus, proteus, klebsiella, enterococcus, and pseudomonas. Some bladder infections in both men and women are linked to two sexually transmitted bugs: Chlamydia trachomatis and mycoplasma. Another parasite, trichomonas, can cause similar symptoms.
Definition of melancholia. : a mental condition and especially a manic-depressive condition characterized by extreme depression, bodily complaints, and often hallucinations and delusions.
Dark skin pigmentation was the original condition for the genus Homo and has been maintained for populations in areas of high UV radiation through human evolutionary history. As a consequence, there must have been a strong selective pressure for the evolution of light skin in areas of low UV radiation.elanin is a derivative of the amino acid tyrosine. Eumelanin is the dominant form of melanin found in human skin. Eumelanin protects tissues and DNA from radiation damage by UV light. Melanin is produced in specialized cells called melanocytes, which are found in the lowest level of the epidermis.